Mounting .img from internal storage as USB Mass Storage

Question

I am trying to mount an .img file from my internal storage as Usb Mass Storage.



There is an Android App named DriveDroid which does exactly what I wanted. I tested with this app and the app successfully mounted an .img file as USB Mass Storage.



But I am unable replicate the same manually.



Anybody having any information on how to mount .img as UMS ?



Phone Details:

  Model : Moto G 2013

  Device Name : falcon

  Rooted : YES

  OS : CyanogenMod 13.0



Thanks.


— Anupam Basak | Sources

Answer

Here are the Terminal commands:



su

echo /sdcard/your_image.img > /sys/class/android_usb/f_mass_storage/lun/file

echo 1 > /sys/class/android_usb/f_mass_storage/lun/cdrom

setprop sys.usb.config mass_storage


(The location of LUN may vary for some devices, you can manually check/search for it even using File Explorer..)



If above commands fail, you might want to disable SE Linux by setenforce 0 command to set it to Permissive, and try again..


— Gokul NC | Sources

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